- Refactor version 1 of post notificaitons to use the common persist_notificaiton and send_notification_to_queue methods.

- It would be nice to refactor the send_sms and send_email tasks to use these common functions as well, that way I can get rid of the new Notifications.from_v2_api_request method.
- Still not happy with the format of the errors. Would like to find a happy place, where the message is descript enough that we do not need external documentation to explain the error. Perhaps we still only need documentation to explain the trial mode concept.

app/models.py

@@ -22,7 +22,7 @@ from app.authentication.utils import get_secret
 from app import (
     db,
     encryption,
-    DATETIME_FORMAT, create_uuid)
+    DATETIME_FORMAT)
 
 from app.history_meta import Versioned
 
@@ -573,13 +573,12 @@ class Notification(db.Model):
                             api_key_id,
                             key_type):
         return cls(
-            id=create_uuid(),
             template_id=template_id,
             template_version=template_version,
             to=recipient,
             service_id=service_id,
             status='created',
-            created_at=datetime.datetime.strftime(datetime.datetime.utcnow(), DATETIME_FORMAT),
+            created_at=datetime.datetime.utcnow(),
             personalisation=personalisation,
             notification_type=notification_type,
             api_key_id=api_key_id,